单词:substance expiration date
药物失效日期
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Part 3 Useful Expressions 第三部分 常用表达 1.Is there a supermarket around here? 1.这附近有没有超市? 2.What time do you close? 2.你们几点打烊? 3.We'd better go and get a shopping cart. 3.我们还是去推一辆推车吧。
发表于:2018-12-29 / 阅读(41) / 评论(0)
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This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. About a billion years from now, some scientists say, the sun will be too bright for comfort, and our formerly hospitable planet will no longer be able to
发表于:2019-01-08 / 阅读(53) / 评论(0)
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DAVID GREENE, HOST: Hospitals and pharmacies are required to throw away drugs that have passed their expiration date, no matter how expensive or vital those drugs may be. But the Food and Drug Administration and others have long known that many drugs
发表于:2019-01-16 / 阅读(24) / 评论(0)
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